It faces south, measures roughly 65 centimetres wide and 25 centimetres high, and leads into an earthen-sided passage extending northward beneath the ground. This is a souterrain, a type of underground stone-lined tunnel constructed during the early medieval period in Ireland, typically used for storage, refuge, or both. The entrance here has never admitted modern investigators; access, when last assessed, was not possible.

The souterrain sits just outside, and slightly south of, a circular enclosure that locals have long referred to by a particular name: a ceallúnach. The word generally denotes a burial ground associated with an early ecclesiastical site, often one predating the formal parish system, and the physical remains here are consistent with that character. The enclosing bank, drystone faced on both its inner and outer surfaces and standing no more than half a metre high, survives only on the eastern side of a north-south field boundary that bisects the site. What remains of the interior is unusual: a carefully arranged area, roughly 12 metres by 7 metres, of upright stone slabs set in neat rows. A low L-shaped bank running about 6.4 metres in length lies just west of these slabs and may represent the footprint of a former building. The site does not appear on Ordnance Survey maps, and the western half of the enclosure has left no visible trace above ground.

The enclosure and its souterrain occupy ground with a long view southeast toward Ballinskelligs Bay, a stretch of coastline on the Iveragh Peninsula in south Kerry that has been inhabited, farmed, and prayed over since early Christian times at least. The arrangement of upright slabs, the probable building foundations, and the subterranean passage together suggest a site of some complexity, one that accumulated function and meaning over time rather than serving any single purpose. The field boundary that now cuts through it is a more recent imposition, and the western portion of whatever once stood there has been quietly lost.